Graphic Arts Industry Glossary
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Tab copy - Text or graphics printed on tab extensions.

Tab mylar - Clear or coloured plastic coating around tab extension.

Tack - In printing inks, the property of cohesion between particles, the separation force of ink needed for proper transfer and trapping on multicolor presses. A tacky ink has high separation forces and can cause surface picking or splitting of weak papers.

Tag - Board grade paper used for products such as tags and file folders.

Tail - The bottom portion of the backbone of a bound volume.

Take-down - In die-cutting, removing the die from the press, prior to a new set-up.

Tapes - Pieces of tape or strips of cloth attached to the covers, and to which sections are sewn to strengthen the binding.

TAPPI - Technical Association of the Pulp and Paper Industry.

Temper - The result of a heating process intended to alter the hardness of a die which has already been subjected to heat treatment.

Tensile strength - A measurement of the resistance of a sheet to pull to the point of rupture.

Terabyte (TB) - One trillion bytes.

Test number - The body matter of a page or book, as distinguished from the headings.

Text paper - Grades of uncoated paper with textured surfaces.

Textblock - The pages of a book, sewn or adhered into one unit.

Thermography - The use of a resin powder that, when heated, fuses to an inked surface and swells to create a raised, textured image.

Thermo-mechanical pulp - In papermaking, made by steaming wood chips prior to and during refining, producing a higher yield and stronger pulp than regular ground wood.

Thickness - The height of a single sheet of paperboard, measured in microns.

Thickness of scoring rule - Generally 2,3,4, and 6 point.

Thirty - Used in newspapers, the symbol "-30-" means the end of story.

Thumbnail sketch - Rough sketch of a design.

Tick marks - Alternate term for Crop marks.

Tinning - Method of binding by crimping a metal strip along edges of sheets.

Tint - Alternate term for Screen tint.

Tints - Various even tone areas (strengths) of a solid color.

Tip-in - Pasting a leaf (or leaves) into a bound book without using guards. Also called "tipping-in."

Tip-On - To bind a foldout or other insert into a book by means of an adhesive.

Tissue overlay - Usually a thin transparent paper placed over artwork for protection uses for marking color breaks and other printer instructions.

Tissue Paper - A very thin, lightweight paper. Also referred to as tissue.

Tissue - Thin, translucent paper used for overlays.

Tolerances - The specification of acceptable variations in register, density, dot size, plate or paper thickness, concentration of chemicals and other printing parameters.

Tonal range - Photographer term for density range.

Toner - Imaging material used in electrophotography and some off-press proofing systems. In inks, dye used to tone printing inks, especially black.

Toning - Alternate term for Scumming.

Tooth - A characteristic of paper, a slightly rough finish, which permits it to take ink readily.

Trade bindery - Business specializing in trimming, folding, binding, and other finishing operations.

Trade camera service - Alternate term for Camera service.

Trade custom - Business terms and policies followed by businesses in the same field and often codified by a trade association.

Trade shop - Printer or other service working primarily for other graphic arts professionals.

Trail edge - Long, horizontal straight piece of rule which comes out of the cut last as the material goes through the press.

Transfer key - 3M trade name for integral color proof.

Transfer tape - A peel and stick tape used in business forms.

Translite - Piece of glass or plastic lit from behind and on which a photographic image has been reproduced for display.

Transparency - Positive photographic image, usually in color, on film allowing light to pass through.

Transparent copy - In photography, illustrative copy such as color transparency or color negative through which light must pass in order for it to be seen.

Transparent ink - A printing ink which does not conceal the color beneath. Process inks are transparent so that they will blend to form other colors.

Transpose - To exchange the position of a letter, word or line with another letter, word or line.

Trap - The ability of an ink film to print over an underlying surface.

Trapping - In printing, ability to print a wet ink film over previously printed wet ink. In prepress, refers to how much overprinting colors overlap to eliminate white lines between colors in printing.

Traverse Wound - Also referred to as level winding, spool wound and reel wound. For example, sewing machine thread or fishing line. This process enables the fabricator to put extremely long lengths of custom slit material on one roll which means less roll changes and cost savings on a manufacturing line.

Trim breakers - Cutting rule in steel rule dies to cut the trim into smaller pieces.

Trim marks - Similar to crop or register marks. These marks show where to trim the printed sheet.

Trim size - The final size of one printed image after the last trim is made.

Tri-tone - A three-color halftone reproduction from a monochrome original and requiring three halftone negatives at proper screen angles. Usually used to create sepia tone.

Tube - Any cylindrical shell open at both ends.

Turnaround time - Amount of time needed to complete a job or one stage of it.

Two-page spread - Two pages side by side either in bindery, printer or reader spreads.

Two-sheet detector - In printing presses, a device for stopping the press when more than one sheet attempts to feed into the grippers.

Type gauge - In composition, a printer's tool calibrated in picas and points used for type measurement.

Type high - 0.918 inch; the standard in letterpress.

Typography - The art of printing with type. The design, style, appearance or arrangement of matter printed from type.

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